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weqwewe [10]
3 years ago
11

Derive the equation of the parabola with a focus at (-5, 5) and a directrix of y= -1

Mathematics
1 answer:
Vinil7 [7]3 years ago
6 0
732-837 dont mind that ill bring my friend and she can do it
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What is 5 ÷ 1/5 <br> I really need help with dividing whole numbers by fractions
salantis [7]

Answer:

25

Step-by-step explanation:

When dividing by fractions, you can multiply by the opposite reciprocal.

5 ÷ 1/5

5 x 5/1

25

4 0
2 years ago
Read 2 more answers
Three cubes of the same metal, whose edges are 6, 8, 10 cm are meltedand formed into a single cube. Find the diagonal of the sin
allochka39001 [22]

Answer: 12√2 cm

<u>Step-by-step explanation:</u>

Cube 1: V = 6³ = 216

Cube 2: V = 8³ = 512

Cube 3: <u>V = 10³ = 1000</u>

New Cube: V = 1728

1728 = s³

12 = s

So, each side of the new cube is 12 cm.

Use Pythagorean Theorem to find the length of the diagonal:

12² + 12² = diagonal²

144 + 144 = diagonal²

288 = diagonal²

√288 = diagonal

12√2 = diagonal


3 0
3 years ago
Mark bought 12 boxes of paper clips and 10 packages of index cards for a
Nata [24]

Answer:

paper clips = $1.85

index cards = $3.95

Step-by-step explanation:

Mark

12 paper clips = x

10 index cards = y

$61.70 total

Janice

15 paper clips = x

7 index cards = y

$55.40 total

12x + 10y = 61.70

15x + 7y   = 55.40

*** you want to cancel out one of the letters

(12x + 10y = 61.70) * -7

(15x + 7y   = 55.40) * 10

-84x -70y = -431.9

150x + 70y = 554.0

150x + 70y = 554.0

-84x -70y = -431.9

66x + 0 = 122.1

66x = 122.1

x = 122.1 ÷ 66

x = 1.85

plug it back in

15(1.85) + 7y   = 55.40

27.75 + 7y   = 55.40

7y   = 55.40 - 27.75

7y = 27.65

y = 27.65 ÷ 7

y = 3.95

8 0
2 years ago
In 20 minutes a heart can beat 700 times. At this rate in how many minutes will a heart beat 140 times at what rate can a heart
murzikaleks [220]
4900 is the answer :)
5 0
3 years ago
Question in image! Thanks for help! (Also im posting more questions like this so if these are easy for you keep a eye out on my
AlexFokin [52]

Answer:

c. x=50; m< LOK = 114

Step-by-step explanation:

(x+64) + 66 = 180

x + 130 = 180

x = 50

4 0
3 years ago
Read 2 more answers
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